[R] How to do a PCA with ordered variables?

P.Branco pjlbranco at yahoo.com
Thu Sep 17 17:21:01 CEST 2009


I want to do a pca using a set of variables which are ordered. I have used
the dudi.mix method from the ade4 package, but when I do the $index it shows
me that R has considered my variables as quantitative.

What should I do?
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